cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A220350 Number of ways of putting 2n^2 counters on distinct squares of a 2n x 2n board so that no row, column or main diagonal contains more than n counters.

Table of values

n a(n)
1 0
2 33
3 112160
4 43346734009
5 2441203940002594824

List of values

[0, 33, 112160, 43346734009, 2441203940002594824]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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